Overview
The INA280A3IDCKR is a high-precision current sense amplifier designed by Texas Instruments. It is part of the INA280 series, known for its high accuracy and low power consumption. This device is particularly suited for applications requiring precise current measurement over a wide common-mode voltage range. The INA280A3IDCKR operates in a compact SC-70 package, making it ideal for space-constrained designs. It features a PCB footprint of only 2.0 mm × 2.1 mm and is characterized for operation from -40°C to +125°C, ensuring reliable performance across various environmental conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-SC70 (DCK), 5 pins |
| Operating Temperature Range (°C) | -40 to 125 |
| Operational Voltage (V) | 2.7 to 120 |
| Survival Voltage (V) | -20 to +122 |
| DC CMRR (dB) | 120 (Minimum) |
| AC CMRR (dB) at 50 kHz | 85 |
| Gain Error (%) | ±0.5 (Maximum) |
| Gain Drift (ppm/°C) | ±20 (Maximum) |
| Offset Voltage (µV) | ±150 (Maximum) |
| Offset Drift (µV/°C) | ±1 (Maximum) |
| Available Gains (V/V) | 20, 50, 100, 200, 500 |
| Bandwidth (MHz) | 1.1 (at gain of 20 V/V) |
| Slew Rate (V/µs) | 2 |
| Quiescent Current (µA) | 370 (Typical) |
| Supply Voltage Range (V) | 2.7 to 20 |
Key Features
- Wide Common-Mode Voltage Range: Operational voltage from 2.7 V to 120 V and survival voltage from -20 V to +122 V.
- Excellent CMRR: 120-dB DC CMRR (Minimum) and 85-dB AC CMRR at 50 kHz.
- High Accuracy: Ultra-low offset voltage of ±150 µV (Maximum), small gain error of ±0.5% (Maximum), and high DC CMRR.
- High Bandwidth and Slew Rate: 1.1 MHz bandwidth and 2 V/µs slew rate, suitable for high-speed applications.
- Low Power Consumption: Quiescent current of 370 µA (Typical).
- Compact Package: SC-70 package with a small PCB footprint of 2.0 mm × 2.1 mm.
- Multiple Gain Options: Available gains of 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
Applications
- Active Antenna Systems and mMIMO (AAS): For precise current measurement in antenna systems.
- Macro Remote Radio Unit (RRU): Used in telecommunications infrastructure for current sensing.
- 48-V Rack Servers and Merchant Network & Server Power Supplies: For high-precision current measurement in server power supplies.
- Test and Measurement Equipment: Suitable for various test and measurement applications requiring accurate current sensing).
Q & A
- What is the operational voltage range of the INA280A3IDCKR?
The operational voltage range is from 2.7 V to 120 V).
- What is the maximum offset voltage of the INA280A3IDCKR?
The maximum offset voltage is ±150 µV).
- What are the available gain options for the INA280 series?
The available gains are 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V).
- What is the bandwidth of the INA280A3IDCKR at a gain of 20 V/V?
The bandwidth is 1.1 MHz at a gain of 20 V/V).
- What is the slew rate of the INA280A3IDCKR?
The slew rate is 2 V/µs).
- What is the quiescent current of the INA280A3IDCKR?
The quiescent current is 370 µA (Typical)).
- What is the operating temperature range of the INA280A3IDCKR?
The operating temperature range is from -40°C to +125°C).
- What package type does the INA280A3IDCKR come in?
The INA280A3IDCKR comes in a SOT-SC70 (DCK) package with 5 pins).
- Is the INA280A3IDCKR RoHS compliant?
- What are some typical applications of the INA280A3IDCKR?
